ANALYSIS OF Cs134-Cs137 MIXTURES BY GAMMA-RAY SPECTROMETRIC METHODS

摘要

The gamma-gamma coincidence method proved to be far more sensitive than the least-squares analysis of non-coincident gamma-ray spectra. In the latter case, Cs134 could not be detected in mixtures with ratios below 0.01. However, the least-squares method was found to be more sensitive than other non-coincident gamma-ray spectrometric methods. It could be used to analyze mixtures with Cs134-Cs137 ratios down to 0.01, although precision is poor at the lower range.